Introduction
This instruction manual provides detailed information on the installation, operation, and maintenance of your Eonon GMX6S Android 13 Car Stereo. This head unit is designed to enhance your in-car entertainment and navigation experience with advanced features like wireless CarPlay, Android Auto, and a powerful 8-core processor.

Figure 1: Eonon GMX6S Car Stereo with included accessories (microphone and backup camera).
Compatibility
The Eonon GMX6S is compatible with a range of Chevrolet, GMC, Buick, and Hummer vehicles. Please verify your vehicle model and year against the list below to ensure proper fitment.

Figure 2: Applicable Vehicle Models for Eonon GMX6S.
Compatible Models:
- Chevrolet: Avalanche (2007-2013), Equinox (2007-2009), Express Van (2008-2019), Impala (2006-2013), HHR (2006-2011), Monte Carlo (2006-2007), Silverado (2007-2013), Suburban (2007-2012), Tahoe (2007-2014), Traverse (2008-2012)
- GMC: Acadia (2007-2012), Savana (2008-2019), Sierra (2007-2013), Yukon (2007-2014)
- Buick: Enclave (2008-2012)
- Hummer: H2 (2008-2009)
Important Note: It is not suitable for installation if your car radio plug is the same as shown in the "Not Fit" section of Figure 2. For retaining factory rear-seat entertainment, a USB to RCA video output adapter converter (not included) is required.
Setup and Installation
The Eonon GMX6S is designed for plug-and-play installation, allowing retention of many original equipment manufacturer (OEM) features.
Key Installation Features:
- Plug & Play: Designed for straightforward installation.
- Retains OEM Features:
- Steering wheel controls
- Door reminder
- Parking sensor
- Reversing guideline
- OnStar
- Bose audio system
- OEM backup camera (if applicable)

Figure 3: Retained OEM Features with Eonon GMX6S.

Figure 4: Optional V0056 OBD2 connection for vehicle diagnostics (not included).

Figure 5: Optional A100 Dash Cam for video recording (not included).
Key Features and Operation
Powerful Performance:
The GMX6S is equipped with a Qualcomm QCM6225 8-Core processor, ensuring high performance and efficiency.
- Processor: Qualcomm QCM6225 8-Core (Quad-core ARM Cortex-A73 @ 2.4GHz + Quad-core ARM Cortex-A53 @ 1.9GHz)
- Manufacturing Process: Samsung 6nm LPP for higher performance and lower energy consumption.
- GPU: Adreno 610 for fluid UI and smooth multitasking.
- Memory: 6GB LPDDR4 RAM
- Storage: 64GB ROM

Figure 6: Eonon X6S Series Internal Architecture.

Figure 7: Performance Comparison: GMX6S vs. GMA12S.
Display and User Interface:
- Display: 8-inch QLED HD display (1280x720 resolution) with vivid colors, high brightness, and high contrast.
- Viewing Angle: 178° wide viewing angle.
- Split-Screen Multitasking: View and use two applications simultaneously.
- Customizable UI: Choose from 4 unique user interfaces.
- Adjustable Button Lights: Personalize backlight colors.
- Power-Off Playback Memory: Resumes playback from the last position.
- Adaptive Screen Brightness: Automatically adjusts display brightness.

Figure 8: QLED Display and Split-Screen Functionality.

Figure 9: Brand New UI Designed for In-car Systems.

Figure 10: Design the Interior the Way You Want It.
Audio Experience:
- DSP Chip: RHOM 32107 DSP for precise sound customization.
- Equalizer: 48-band equalizer.
- Amplifier: ST TDA7851 amplifier delivering 4x48W surround sound output.
- Radio Module: ST TDA7708 for crystal-clear radio reception (AM/FM/RDS support).
- Audio Outputs: Optical and coaxial audio outputs for professional-grade setups, plus RCA output.

Figure 11: Immersive Audio Experience Features.

Figure 12: Optical & Coaxial HD Audio Output.
Seamless Connectivity:
- Wireless & Wired CarPlay/Android Auto: Bridges your smartphone to the car display.
- Screen Mirroring: Supports both iOS and Android devices.
- 4G Module: Built-in, supports SIM card insertion for direct internet access.
- Wi-Fi: Wi-Fi 6 ready, supporting 2.4/5 GHz for fast speeds and WPA3 encryption.
- Bluetooth: Bluetooth 5.1 (Qualcomm WCN3988) for faster and more stable connections.
- USB Ports: 3 USB ports available.

Figure 13: Wireless CarPlay & Android Auto in Action.

Figure 14: Wireless Apple CarPlay Connection Steps.

Figure 15: Wireless Android Auto Connection Steps.

Figure 16: Screen Mirroring for iOS.

Figure 17: Screen Mirroring for Android.

Figure 18: Bluetooth and Backup Camera Features.

Figure 19: Wi-Fi & Built-in 4G Module.

Figure 20: Additional Features.
Maintenance
To ensure the longevity and optimal performance of your Eonon GMX6S car stereo, follow these general maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the display and unit. Avoid abrasive cleaners or solvents.
- Temperature: Operate the unit within recommended temperature ranges. Extreme temperatures can affect performance and lifespan.
- Software Updates: Regularly check for and apply firmware updates to ensure system stability and access to new features.
Troubleshooting and Firmware Updates
For common issues or to improve system performance, consider the following:
Firmware Updates:
Keep your car stereo up-to-date through Over-the-Air (OTA) updates. These updates can fix software issues and enhance security. Note that Android system upgrades are not supported via OTA.

Figure 21: Over-the-air Firmware Update Process.
Common Issues:
- No Sound from Rear Speakers: Verify speaker connections and ensure your vehicle's audio system is compatible. Some OEM systems may require specific adapters or speaker replacements.
- Bluetooth Echo during Calls: Check microphone placement and adjust audio settings. Ensure no other devices are interfering with the Bluetooth connection.
- Parking Sensor Chime Issues: If the chime does not shut off, it may indicate a CAN bus communication issue. Ensure the correct CAN bus adapter is used for your vehicle model.
- Radio Sound Quits After Car Off: This behavior can be related to the vehicle's power retention settings. Consult your vehicle's manual or a professional installer if persistent.
- Android Auto Icon Size: Icon sizes within Android Auto are typically controlled by the Android Auto application itself. Check for updates to the Android Auto app on your phone.
If you encounter persistent issues, please refer to the "Warranty and Support" section for assistance.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 2.01 x 17.78 x 7.49 cm; 1.52 kg |
| Item Model Number | GMX6S |
| Display Size | 8 Inches |
| Voice Command | Microphone, Touchscreen |
| Manufacturer | Eonon |
| Country of Origin | China |
| Connectivity Technology | Bluetooth, USB, Wi-Fi, 4G LTE |
| Controller Type | Android |
| Special Features | Built-In Bluetooth, Lane Assist (via navigation app), Touchscreen, Waterproof (Backup Camera) |
| Compatible Devices | Amplifier, Smartphone, Speaker |
| Connector Type | Coaxial, Optical, RCA |
| Audio Output Mode | Stereo |
| Surround Sound Channel Configuration | 4 Channel |
| Video Encoding | RM |
| Color | Black |
| Processor | Qualcomm QCM6225 8-Core |
| RAM | 6GB LPDDR4 |
| ROM | 64GB |
| GPU | Adreno 610 |
Warranty and Support
Eonon is committed to providing excellent customer service and support for its products.
Warranty Information:
- 30-Day Money-Back Guarantee: For any reason, return your undamaged Eonon product within 30 days of purchase for a full refund.
- 18-Month Warranty: Covers quality-related issues. Products can be repaired or replaced.
- 2-Year Warranty: Available within 2 years for certain conditions.
- Lifetime After-Sales Service: Ongoing support for the product.
Customer Support:
For any questions or assistance, please contact the Eonon Support Team:
- Email: us-techsupport@qq.com
- Service Location: An authorized Eonon Repair Services location is available in the US.
Eonon has over 23 years of experience in car audio manufacturing and a professional R&D team dedicated to product quality and customer satisfaction.
Product Video Overview
Watch the official product video for a visual guide to the Eonon GMX6S Car Stereo's features and capabilities.
Video 1: Eonon GMX6S Car Stereo for GMC Sierra/Yukon/Chevy Silverado. This video provides a comprehensive overview of the product's design, features, and user interface.





